If your Alexa is blinking yellow, it means you have an unread message. If your Alexa is flashing green, it means you have an incoming call. Other colors (like blue, purple, orange, and red) indicate ...

The first successful personal computer didn’t have a screen — not even a command-line screen. It communicated with the user through blinking lights. It was called the MITS Altair 8800. This ...

If you want to find someone at a big event, it’s difficult. “I’m by the big orange thing sort of next to the pretzel vendor kinda” is pretty standard fare for communicating your whereabouts. A new ...

A yellow, gold or amber blinking light on a computer varies in meaning between systems, but in general, these lights are designed to give clues as to the power and activity states of the computer. Not ...